G78D12A Global Mixed-mode Technology Inc. 12V 1A Low Dropout Regulator Features General Description The G78D12A positive 12V voltage regulator features the ability to source 1A of output current. The dropout voltage is 0.5V at 0.5A output current. The typical quiescent current is 1.2mA. Furthermore, the quiescent current is smaller when the regulator is in the dropout mode (VIN < 12V). Dropout Voltage 0.5V @ IO = 0.5A Over Current Protection Excess 1.3A Output Voltage Accuracy ±2.5% Quiescent Current, Typically 1.2mA Internal Short Circuit Current Limit Internal Over Temperature Protection TO-252 3pin Full-Mold Package Familiar regulator features such as over temperature and over current protection circuits are provided to prevent it from being damaged by abnormal operating conditions. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) 1 PIN OPTION 2 3 G78D12AT45U G78D12AT45D 78D12AT45 78D12AT45 -40°C to +85°C -40°C to +85°C TO-252 TO-252 VIN VIN GND GND VOUT VOUT Order Number Identification GXXXXXX XX X X Packing Type Pin Option Package Type Part Number PACKAGE TYPE T4: TO-252 PIN OPTION 1 5: VIN 2 GND PACKING U & D: Tape & Reel 3 VOUT Pin Configuration Typical Application Circuit IO VIN Top View G78D12A C1 4.7µF 1 2 IQ VOUT COUT 47µF 3 TO-252 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.4 Nov 25, 2009 1